The blue Plop Clock (year 2006)

Introduction

This clock is showing the time with blue colored led's.
The Clock can request the time from my network. A relais is connected
to the clock and can be controlled from any computer in my network (ex. turn a lamp on or off).

Why i build a blue clock? Simply, I wanted to have a blue clock.

The clocks is running with an Atmel processor connected with the Wilke
EM01-ETH-S network modul. The display is a dotmatrix led display (3 in a row).
The firmware is written in assembler.

;**********************************************************************
;
; Copyright (C) 2007-2008 Elmar Hanlhofer http://www.plop.at
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
;
;
;**********************************************************************
; send data to usart
serialSend:
sbis UCSRA,UDRE
rjmp serialSend
out UDR,r16
ret
; read data from usart
serialRead:
push r16
push r17
clr r16
ldi r17,0
_serialRead:
sbis UCSRA,RXC
rjmp _serialRead
pop r17
pop r16
in r16,UDR
clc
ret